Opening reinforcement (Reviewer exam questions)
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What are the differences between equal-area reinforcement and analysis methods? Please advise on a more comprehensive answer
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Answer: The opening reinforcement method is applicable to the openings in the container body and their reinforcement calculations, including the equal area method and the analytical method. The equal area method is applicable to circular, elliptical, or oblong openings in shells and flat heads under pressure. When an oval or oblong hole is made in the housing, the ratio of the long diameter to the short diameter of the hole should not exceed 2.0. The analysis method is a stress analysis approach derived from the theory of elastic thin shells, used for the reinforcement design of openings in cylinders with radial nozzles under internal pressure. Its applicable range is: d≤0.9D and max[0.5, d/D]≤δet/δe≤2. The difference between the equal-area method and the analytical reinforcement method lies in the effective reinforcement range of the shell; the equal-area method corresponds to the stress attenuation range of a large flat plate with small holes under uniform tensile loading ； The analytical method is the circumferential film attenuation range of the cylindrical shell.
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The answer was very clear; I’ve learned it